Certificates
An SSL certificate can expire before anyone remembers it.
DomainGuard tracks certificate health and expiry so the warning appears before customers see a browser error.
DomainGuard by NHM Ohio
One place to see what can break your domain, email, or website.
DomainGuard monitors DNS, SSL certificates, email authentication, uptime, vulnerabilities, compliance, and website health. It shows what needs attention, why it matters, and where to act next.
- No credit card
- Unlimited domains free
- Manual security scans included
- iOS beta open now
Example overview
example.com
Domain
Healthy
Review
Website
Healthy
DMARC policy is still monitoring
Review sender pass rates before moving toward enforcement.
Certificate expires in 21 days
Confirm automatic renewal before the next scheduled scan.
Last scan: today
Uptime: online
30
monitoring and scan modules
Free
on unlimited domains
3
watched automatically
1
account for web and iOS
Public beta on TestFlight
Try the iPhone app before it reaches the App Store.
DomainGuard 1.3 is open to anyone who wants to test it. Install it through Apple's TestFlight app, add a domain, and tell us what breaks or reads wrong. We fix beta reports before the public release, not after.
- Requires
- iOS 16 or later, iPhone or iPad
- Build
- DomainGuard 1.3, pre-release
- Cost
- Free, and the free plan is enough to test
- Account
- The same login as the web dashboard
Why it matters
Domains rarely fail in one obvious place.
Your website, DNS, certificates, and business email depend on different records and providers. DomainGuard keeps those signals together so a small change does not stay invisible until a customer reports it.
Business email
One new sending service can break email authentication.
SPF, DKIM, DMARC, blacklist checks, and DMARC reports show which services pass and where mail reputation needs attention.
DNS and uptime
A small DNS change can take a site or inbox offline.
Change history, scheduled scans, uptime checks, and activity records give you a place to see what changed and when.
Website risk
Exposed software and weak browser controls are easy to miss.
Vulnerability, technology, header, and website scans turn public-facing risk into a list your team can work through.
Who DomainGuard is for
Built for the person who will actually get the alert.
Business owners who manage their own technology
You need to know if the company website, certificates, DNS, and business email are healthy without learning five separate security tools.
Small internal IT teams
You need one prioritized view across domains, useful history when something changes, and evidence you can share with leadership.
Agencies and service providers
You manage several customer or brand domains and need repeatable checks instead of opening a different dashboard for every signal.
Teams preparing for audits or insurance
You need a current record of certificates, email authentication, vulnerabilities, and remediation work instead of rebuilding the evidence later.
What it monitors
The checks that usually live in separate tools.
Every finding stays tied to the domain it came from. That makes it easier to move from a portfolio view to the record or scan that needs work.
Domain, DNS, and certificate health
Keep the basic infrastructure behind your website and email visible.
- Domain portfolio and registrar details
- SSL certificate status and expiry
- DNS and nameserver checks
- DNS change history and activity feed
Email security and DMARC
See whether legitimate business email authenticates and who else is sending.
- SPF, DKIM, DMARC, and MX checks
- Automatic DMARC report intake
- Known and unknown sender identification
- Blacklist checks and deliverability diagnostics
Website security and vulnerabilities
Find public-facing weaknesses before they become a surprise during an incident or review.
- Known vulnerability and exposed-service scans
- Website transport, cookie, and form checks
- HTTP security header analysis
- Technology and framework detection
Uptime and service status
Separate a problem with your site from an outage at a provider you depend on.
- Website uptime and availability history
- Third-party provider status monitoring
- Custom endpoint checks
- Incident and activity records
Compliance and clear reporting
Keep technical findings and remediation evidence organized for the people who need it.
- PCI, HIPAA, and cyber-insurance tracking
- Prioritized security checkup
- PDF reports for stakeholders
- SEO and accessibility scanning
Alerts, automation, and scale
Move beyond manual checks as the number of domains and people involved grows.
- Scheduled scans and email alerts
- Email and app notifications
- Read-only API and MCP access on Pro
- Hourly scans and write access on Enterprise
What happens after setup
A useful baseline, a current history, and a next action.
Baseline
Add a domain and see the current posture
DomainGuard checks the records and public signals it can observe, then brings the highest-priority findings into one overview.
Monitor
Keep the picture current
Scheduled scans, history, DMARC reports, uptime checks, and provider status give you a record of what changed after the first scan.
Act
Use a specific next action
Open the affected module to see the record, finding, or recommendation behind the alert. Export evidence or ask NHM for help when you need it.
Plans that grow with the domain count
Start with the full security baseline.
The free plan is useful on its own. Paid plans add more watched domains, notifications, automation, and faster scanning.
Free
Free
Every health check on every domain you own, on demand — three watched for you
- Domains
- Unlimited domains
- Scans
- On demand
Starter
$25/mo · $250/yr
DMARC reports, SEO and accessibility, and 25 domains watched daily with email alerts
- Domains
- Unlimited domains
- Scans
- Daily
Pro
$50/mo · $500/yr
The local SEO suite, monthly SEO reports, read-only API and MCP access, 100 domains watched
- Domains
- Unlimited domains
- Scans
- Daily
Enterprise
$250/mo · $2,500/yr
Hourly scans on unlimited domains, priority queue, and an API and MCP server that can make changes
- Domains
- Unlimited domains
- Scans
- Hourly
Before you add a domain
Common DomainGuard questions.
Who is DomainGuard for?
DomainGuard is built for small businesses, lean IT teams, agencies, and service providers that manage business domains without a large security operations team. It is most useful when website, email, DNS, and compliance checks are currently spread across separate tools or handled only when something breaks.
What can I do on the free plan?
Free holds every domain you own and includes every core security module on all of them, run whenever you like: DNS, SSL, email authentication, uptime, blacklists, the security checkup, the website scan, the vulnerability scanner and a manual dark-web check. Three domains are watched automatically. You do not need a credit card. What it does not include is DMARC report ingestion and SEO — those start on Starter at $25 a month, along with monitoring that runs without being asked.
Is DomainGuard a web dashboard or an iPhone app?
It is both. The web dashboard contains the full platform. The iOS companion app uses the same account and focuses on quick domain checks, alerts, status, breach monitoring, and support while you are away from a desk.
Can I get the iPhone app today?
Yes, through the public TestFlight beta. DomainGuard 1.3 for iPhone and iPad is open to anyone who wants to test it before the App Store release. It needs iOS 16 or later, it is free, and it signs in with the same account as the web dashboard. The beta page explains what to test and how to send feedback.
Does DomainGuard make changes to my DNS or website?
No. DomainGuard scans, monitors, records, and recommends. Changes remain under your control. Enterprise API write access can perform the specific account actions exposed by the API, but it does not silently edit outside DNS providers or websites.
What do I need to get started?
Create an account and add a domain name. Most checks work from public information. Features such as DMARC reporting need you to publish the reporting address DomainGuard provides, and some integrations need their own setup.
Can NHM Ohio help fix the findings?
Yes. DomainGuard shows the evidence and next action so you can handle the work internally. If you want help, NHM Ohio can review DNS, email authentication, website security, or the wider IT environment with you.
Add the first domain today
Get the baseline before the next certificate, DNS, or email change.
The free plan covers every domain you own. Run the checks yourself, keep the history in one place, and bring NHM in only when you want help with a finding.